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Fix Windows Defender High CPU Usage on Windows 11 - Error 0x800f0831: Component Missing in Windows Update-Fix Windows Defender Service Error on Windows 10 and 11

2026-06-13 14:31:23developer-tools
Fix Windows Defender High CPU Usage on Windows 11 - Error 0x800f0831: Component Missing in Windows Update-Fix Windows Defender Service Error on Windows 10 and 11

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.

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